JP2002345605A - Cushion body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cushion body constituting a bench or a chair for studying, in which a cushion member is fixed to a cushion base plate by simple work without using an adhesive material. SOLUTION: An engaging member (1) having many hook-like engaging elements (3) on the surface of a substrate (2) and having an attaching projected line with an expanded head part (4) at an end part on the back surface of the substrate is attached to the cushion base plate by fitting the expanded head part of the attaching projected line to an opening groove (8) provided on the cushion base plate (7). The cushion member (9) composed of a foamed body layer (10) and many loop-like elements (11) provided on the back surface of the foamed body layer is fixed onto the cushion base plate by the engagement of the loop-like elements and the hook-like engaging elements.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a chair, a sofa,
The present invention relates to a cushion body used for a bed or the like, and more particularly to a cushion body provided with a cushion member on a relatively hard base plate.

[0002]

2. Description of the Related Art Conventionally, cushion bodies having different structures depending on the purpose have been widely used as chairs, sofas, beds and the like. These cushion bodies have a structure in which a cushion member is provided on a flexible sheet or a net-like wire, and a structure in which a cushion member is provided on a relatively hard cushion base plate (hereinafter, may be abbreviated as a base plate). Can be roughly divided into structures provided with. A cushion body having no base plate is suitable for a product having a large cushioning property, and is used for various furniture chairs and soft sleepers. On the other hand, a cushion body having a base plate is intended to be a relatively hard cushion body, and is often used for a horizontally long bench-type chair or a cushion body for a vehicle chair or a learning chair in which a hard cushion is desired. .

A conventional cushion body having a base plate has been manufactured by applying an adhesive to the base plate and bonding a plastic foam layer to the adhesive. In the method using such an adhesive, since it is necessary to install the foam layer at the correct position at one time, an accurate operation is desired, and in the case of an incorrect operation, a defective product is generated. Once bonded with an adhesive, there is a problem that it is difficult to remove again. Further, depending on the type of the adhesive, a harmful solvent component may be contained or a harmful gas may be generated. Therefore, the use of the adhesive is not preferable from the viewpoint of environmental hygiene.

[0004]

SUMMARY OF THE INVENTION The present invention does not have the conventional problems and is easy to manufacture by using a bonding structure of a base plate and a cushion member without using an adhesive. An object of the present invention is to provide a cushion body that can be easily removed from a cushion member.

[0005]

That is, the present invention provides an engaging member having a plurality of hook-shaped engaging elements on the surface of a substrate, and a mounting ridge having a bulge at the end on the back surface of the substrate. The ridge of the mounting ridge fits into the opening groove provided in the base plate and is attached to the base plate. The foam layer and a large number of loop-shaped elements provided on the back surface of the foam layer are attached to the base plate. A cushion member is fixed on the base plate by engagement of the loop-shaped element and the hook-shaped engagement element, and is preferably provided on the base plate. The opening groove is an independent opening groove in the base plate, and the engaging member is attached to the base plate by press-fitting a bulging portion of a mounting ridge into the opening groove. The opening groove provided in the base plate continuously opens inward from the end of the base plate. An open groove, a case in which the engagement member is attached to the 該台 plate through feed attachment projection from the open end portion of the opening groove.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view in the width direction showing an example of an engaging member according to the present invention. The engaging member 1 includes a substrate 2, a large number of hook-shaped engaging elements 3 on the surface thereof, and bulging ends. A mounting ridge 5 having a head 4 is provided on the back surface.

As the engaging member constituting the present invention, various thermoplastic resins such as polyolefin resins such as polyethylene and polypropylene, polyester resins and polyamide resins can be used. From the viewpoint of moldability, polyolefin resins such as polypropylene can be used. Resins are preferred. The thickness of the substrate is usually preferably about 0.2 to 2.0 mm, more preferably about 0.3 to 1.0 mm. The height of the engaging element is not particularly limited, but is preferably about 0.5 to 6 mm, more preferably about 1 to 3 mm. The shape of the engagement element may be either a hook type or a mushroom type. The density of the engagement elements is preferably 5 to 500 pieces / cm ² .

The size of the mounting ridge is not particularly limited, and is usually about 0.4 to 4 mm in width, more preferably about 0.4 to 4 mm.
The height is about 8 to 2 mm, the height is about 0.8 to 8 mm, and more preferably the height is about 1 to 4 mm. The bulging portion has a mushroom-like or arrowhead-like shape, and its maximum width needs to be larger than the width of the opening groove of the base plate.
It is assumed to be about 4 mm larger. The bulging portion of the mounting ridge is deformed by pressure and inserted into the opening groove, and is configured so that it cannot pass through the narrow opening groove thereafter. Of course, the mounting ridge may be endlessly continuous in the length direction of the engaging member, or may be intermittent having a cut in the middle. Furthermore, as for the number of mounting protrusions provided on the back surface of the engaging member, it is sufficient that the engaging member has at least one.

When the resin of the engaging member is hard and the expansion part is not easily deformed, a small cut (gap) is provided in the expansion part so that the width of the expansion part is reduced by pressure. Is preferred. FIG. 2 is a partial cross-sectional view showing the structure of the mounting ridge in which a cut is provided in the above-mentioned bulging portion. Mounting ridge 5
A cut 6 is provided in the bulging portion 4 of the slab, and when a force is applied to the bulging portion 4 from the side, the gap of the stub 6 is crushed, and the bulging portion becomes smaller by that amount and passes through the opening groove provided in the base plate. be able to. Since the bulge returns to its original state after passing through the opening groove, the bulge cannot pass through the opening groove. In the structure shown in FIG. 2, it is preferable that the cut 6 is provided so as to extend to the substrate side beyond the maximum width of the bulge, so that the maximum width of the bulge can be reduced by the cut.

As a preferred method of manufacturing the engaging member constituting the present invention, a thermoplastic resin is melt-extruded from a die having a slit corresponding to the substrate, the hook-shaped engaging element and the mounting ridge, and the front and rear surfaces of the substrate are formed. A large number of independent engaging elements are formed on the surface of the substrate by forming a tape having a continuous line on the surface, making small cuts in the continuous line on the surface, and then stretching the tape in the longitudinal direction. It can be manufactured as a molded body having a structure that has a mounting ridge that has a mounting ridge that is continuous in the length direction on the back surface and has a bulge at the end.
Alternatively, a first member having a substrate and a hook-shaped engaging element, and a second member having a substrate and a mounting ridge may be manufactured and manufactured by a method of integrating the substrates of both members.

FIG. 3 is a perspective view of an example of the present invention showing a state in which the engaging member is attached to the base plate. The engaging member 1 is mounted in an opening groove 8 provided in the base plate 7. The opening groove 8 provided in the base plate 7 in FIG. 3 is provided in the base plate in an elongated hole shape, and is referred to as an independent opening groove. On the other hand, FIG. 4 shows a structure in which an opening groove 8 ′ provided in the base plate 7 continuously opens from the end of the plate toward the inside of the base plate. When the base plate has this structure, the mounting ridge can be slid and inserted from the end of the opening groove, so that the mounting of the engaging member may be facilitated. Further, in this case, it is preferable to fill the end of the opening groove with an appropriate sealing material or sealing tool so that the engaging member does not slip off from the end of the opening groove.

The engaging member is mounted on the base plate by press-fitting or inserting a mounting ridge provided on the back surface of the engaging member into the opened groove, and the mounting ridge is extended from the opening groove by a bulging portion of the mounting ridge. Is configured not to escape. Therefore, the width of the opening groove is formed to be slightly smaller than the width of the bulging portion. The length, shape, number, etc. of the opening grooves of the base plate can be arbitrarily configured depending on the size of the obtained cushion body. For example, width 50c
m, opening width 1.1mm on a metal base plate of length 1.2m,
Six open grooves with a length of 10 cm are provided, and the ridge width is 1 mm in the grooves.
Product width 2cm, length 9.5 (maximum width of bulge 1.5mm)
cm engagement member. The cushion base plate used in the present invention includes a wooden plate, a metal plate, a plastic plate, or a composite plate thereof, and has a rigidity that does not significantly deform even when a load is applied to the base plate during use. It is.

FIG. 5 is a sectional view showing a state in which the cushion member is fixed to the base plate shown in FIG.
It is sectional drawing in a line. After attaching the above-mentioned engaging member 1 to the surface of the base plate 7, the cushion member 9 is provided so as to cover the base plate, and the intended cushion body is obtained. The cushion member 9 includes a resin foam layer 10 made of a polyurethane resin, a polyolefin resin, or the like, and a loop element 11 provided on a back surface thereof, that is, a surface in contact with the base plate. This loop-shaped element 11 engages with the hook-shaped engaging element 3 of the engaging member 1 attached to the opening groove 8 of the base plate, and fixes the cushion member 9 to the base plate 7. As the loop-shaped element provided on the cushion member, a fiber cloth or a needle-punched non-woven fabric having a large number of loop-shaped fibers erected, or a non-woven fabric having a long crimped fiber on its surface that is intertwined with the hook-shaped engaging element is used. it can. These members are bonded or fused to the back surface of the foam layer to produce a cushion member. Further, a method of integrating the loop-shaped element and the cushion member with a fitting or the like may be used. However, it is not preferable that the cushion body surface gives a foreign-body sensation when used.

The surface of the cushion body of the present invention is preferably covered with a suitable skin material. The skin material may cover only the cushion member, or may be provided so as to cover a part of the back surface of the cushion member and the base plate. There is no particular limitation on the skin material, and various materials can be used depending on the purpose. As specific examples, fiber cloth,
Non-woven fabrics, leathers, synthetic leathers and the like can be mentioned.

[0015]

According to the present invention, the cushion member can be fixed to the cushion base plate by a simple operation without using an adhesive. Since the adhesive is not used, the cushion member does not need to be fixed at one time, the work can be easily corrected, defective products can be prevented from occurring, and environmental health is not adversely affected. Furthermore, the cushion member can be detached from the cushion base plate and the cushion member alone can be washed, and the cushion member whose cushioning property has deteriorated due to long-term use can be easily replaced with a new cushion member. Recycling can be advantageous.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an example of an engaging member according to the present invention.

FIG. 2 is a partial cross-sectional view showing a structure of a mounting ridge in which a bulge of an engaging member of the present invention is provided with a cut.

FIG. 3 is a perspective view of an example of the present invention showing a state in which an engaging member is attached to a base plate.

FIG. 4 is a perspective view of another example of the present invention showing a state in which an engaging member is attached to a base plate.

FIG. 5 shows a state in which the cushion member is fixed to the base plate.
FIG. 3 is a sectional view taken along line AA ′ of FIG. 3.

[Explanation of symbols]

 1: locking member 2: substrate 3: engaging element 4: bulging head 5: mounting ridge 6: cut 7: cushion base plate 8, 8 ': open groove 9: cushion member 10: resin foam layer 11: Loop element

Claims (3)

[Claims] An opening provided on a cushion base plate has an engaging member having a plurality of hook-shaped engaging elements on a surface of a substrate and a mounting ridge having an enlarged portion on an end on a back surface of the substrate. The protruding portion of the mounting ridge fits into the groove and is mounted on the cushion base plate, and the cushion member including a foam layer and a number of loop-shaped elements provided on the back surface of the foam layer is formed by the loop member. A cushion body fixed on a cushion base plate by engagement of a hook-shaped engaging element with the hook-shaped engaging element. 2. An opening groove provided in the cushion base plate is an independent opening groove in the cushion base plate, and the engaging member is pressed into the opening groove so that the engaging member is engaged with the cushion base plate. 2. The cushion body according to claim 1, wherein the cushion body is attached to the cushion body. 3. An opening groove provided in the cushion base plate is an opening groove continuously opened inward from an end of the cushion base plate, and the engaging member is provided from an opening end of the opening groove. 2. The cushion body according to claim 1, wherein the cushion body is attached to the cushion base plate by passing through the attachment ridge.